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N- PETERS, PHOTO-LITHOGRAPHER, WASHINGTON. D. C

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TO ALL WHOM I'l MAY CONCERN: i

Be it known that AI, JOHN PEPPER, of Lake Village, in the county ofBelknap, and State of New Hampshire, have invented certain new anduseful improvements in I {nitting Machines; and I do hereby declare thefollowing to he a rfull, clean-and exact description of the same,reference being had to the accompanyingdrawings, making'a part of thisspecification, in which- Figure 1 represents a top plan of the machine.

Figure 2 represents an elevation thereof. e

i Figures 3 and 4 represent details of the interior mechanism mainly,with an external portion to the extreme right in section. I v i i Figure5 represents an elevation looking towards a separate part of the machinefrom that shown in iig. 2.

Similar letters of reference where they occur in the several separateguresdenotelike parts in all the The object and purpose of thisinvention is to so construct Aa knitting machine as to make it capableofl doingiseveral kinds of work, such as occur in knit goods, viz, plainor, common ribbed, and plaited ribbed work, and this, too, whilst themachine may continue in motion, or without rearranging the machine, Andmy invention consists, irst,vin a'slide or its equivalent for raisingcr'lowering an interior cam, which cam when lowered keeps the needlesdown so low that their loops will not he cast oif, and with one threadin this condition the machine knits common ribbed work, and which cam,when raised up and another thread thrown in, causes the machine to knitplaited ribbed work. And my invention consists further in the useof aspur-wheel and pin, (or series of adjustable pins,) for throwing down acam or its equivalent, which causes the needles to come further down,and thusmake n longer stitch and looser knitting, and which, on beingraised, makes` a shorter' and tighter stitch or loop, the object beingto knit the fabric tighter or looser insome places than in others, as,for instance, loose at the top of a stocking, gradually tightened up toand throughout the calf or central portion, and quite tight or close atthe ankle, or for making slack courses for ribbed tops.

To enable others skilled in 4the art to make and use my invention, Iwill proceed to describe the same with reference to the drawings. e

Thew external appearance of my machine does not diier much frommany'others now inuse. I use two series of circularly-arranged needles,viz, a horizontal revolving and radially-arranged series, a, that isproi jeeted and withdrawn as they revolve, and a vertical series, b,that does not revolve, but which is projected and withdrawn, or raisedand lowered, as will he hereafter explained.

The parts A of the machine are stationary, whilst the portion B is movedor revolved there-on by a spurE wheel or pinion gearing into thecircular rack G on the moving portion. On the perimeter of the movingpor tion B there is attached a slide, c, by means of set-screws dpassing through horizontally-formed slots e, which control the extent ofmovement of said slide. There is also cut or formed in the slide c aninclined slot, f, into which apin, g, fastened in an interiorpivoted`switch, 7L, (iig. 3,) projects, so that as the external slide eis moved, so will be correspondingly moved the internal switch L, whichchanges the cam-way or groove 1f on the perimeter of the interiorcylinder D, and correspondingly changes the raising or lowering of theneedles which nre `governed in `their movement by said cam-path orgroove z' at that point. The object in raising and lowering the needlesby raising and lowering the switch orcam-way has been stated, viz, tochange the machine to plaited ribbed work or to common ribbed work, asmay be-desired. There are two threadguides,jle,I when knitting commonribbed work one thread only is used,'when knitting plaited ribbed work asecond thread is 'thrown in, andltvhen ltwo threads are used ofdiil'erent colors they will form longitudinal ribs of different colors.On the moving portion B there is arranged a vertical shaft, Z, having atits lower portion a. series of radial pins,

ni, and on its upper portion a wormfgear, it, that takes into aworm-wheel, o, on a horizontal shaft, p, g. 4: 0n the shaftp there is acam, r, that bears upon a stud, g, attached to a vertically sliding camor switch, s, also attached to the interior cylinder D, (see figs. 3 and4,) and a spring, t, under the stud g, keeps the latter up against thecam r. Onthe stationary part of the frameA. there is a series of holes,u, into one or more of which a pin,'. `v, may be placed, so that atevery revolution of the revolving portion ofthe machine one of the' pinsm will strike the stationary pin if and give the shaft Z a partialrotation, and the shaft, through its worm# gear, moves the camr andsliding-switch s, thus drawing down or moving' 'up the needles, as maybe desired in knitting loose or tight work. If more than one pin i; beused, more motion will be given to the cam and to the switch vs; if noneare used,then the parts will remain in one fixed position. The pins maybc inserted or taken out as the machine is in motion, or increased ordiminished in number, thu's graduating the tightness or looseness of theknit fabric at pleasure. i

What I claim as my invention, and desire to secure by Letters Patent,is, {irstl In combination with an interior pivoted com or4 switch, aslide, or its mechanical-equivalent, for raising o1' lowering said camor switch, and thus changing the cam-groove and lowering or raising theneedles, for changing the machine from common ribbed to plaited ribbedwork, or vice versa, substantially as described.

I also claim the revolving pin-Wheel m, in combination with a.stationary pin or pins, for the purpose' of moving an interior cam orswitch, and changing the traverse of the'needles at that point, forchanging the machine from tighter to looser knitting, or rice versa,.substantially as herein described.

l l JOHN PEPPER.

Witnesses:

A. B. S'roUGHToN, EDM. F. BROWN.

